#teacher_block, #schema_of_lectures_block, #link_of_content_block, #lectures_block {
    width: 100%;
    height: auto;
    float: left;
    border-bottom: solid 1px rgb(0, 0, 0);
    font-family: arial;
}

#teacher_block {
    
}

#schema_of_course_block {
    
}

#link_of_content_block {
    
    
}

#lectures_block {
    
}